Fan.



No. 715,0". P atonte d Dec. 2, I902. G. R. BROCK G. W. C. BARTH.

FAN.

(Application filed an. as, 1002.)

(lo Iodol.)

WITNESSES IN VEN TORJ 0. a 8y z? f6. M45

UNITED STATES ATENT OFFICE.

CLARENCE R. BROCK AND \VILLIAM C. EARTH, OF BROUGI-ITON, KANSAS.

FAN.

sPECIFIGATION forming part of Letters Patent No. 715,01 1, datedDecember 2, 1902. Application filed January 28, 1902. Serial No. 91,573.(No model.)

To ctZZ whont it may concern.-

Be it known that we, CLARENCE R. BROOK and WILLIAM C. BARTH,citlZenS ofthe United States, residing at Broughton, in the county of Clay andState of Kansas, have invented certain newand usefullmprovementsin Fans;and we do hereby declare the following, to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same, reference being badto the accompanying drawings, and to the figures of reference markedthereon, which form a part of this specification.

This invention relates to fans, and particularly to rotating fans drivenby a springmotor.

The object of the invention is to provide an improved device forgoverning the speed of the fan and for stopping the same.

A further object is to construct an improved bearing for the fan-shaft.

With these and other objects in view an embodiment of the invention ishereinafter described and is illustrated in the accompan ying drawings,in which Figure 1 is a side elevation of the device, part of the casingbeing removed to show the interior thereof. Fig. 2 is a sectional viewon a larger scale.

Referring particularly to the drawings, the motor is inclosed in thecasing 6, which may be attached to the ceiling or wall in any propermanner. The power is furnished by a spring 7, which drives the fan-shaft8 by a train, which may be of any proper construction, and thereforeneed not be described, nothing being claimed relative thereto.

The shaft 8 is hollow and is journaled at its upper end in astep-bearing 9, formed in the top plate 6 of the casing. The shaft has ashoulder 10, which forms a bearing at a round hole in the lower plate 6of the casing, through which the shaft extends. At the lower end of theshaft the socket-piece 11 is attached, clamped between a shoulder 12 onthe shaft and a jam-nut 13, the extremity of the shaft beingscrew-threaded for the nut. The wings 14 of the fan are secured in thesocket-piece by setscrews 15. The wings are angularly adjustable in thesockets with respect to the plane of their motion and are held at suchadjustment by the set-screws. This adjustment serves, to a certainextent, to govern the speed of the fan. Extending through the shaft is along thumb-screw 16, threaded at its upper end to take into ascrewthreaded hole in the top plate, and below the lower end of theshaft the screw carries a washer 17, forming a shoulder adapted to bebrought against the lower end of the shaft. By screwing the thumb-screwin it binds the shaft between the washer and the step-bearing, and thespeed of rotation of the shaft may be reduced at will or stopped, ifdesired.

The shank of a wing and the socket to receive it are of such shape,preferably round, that the former may be turned in the latter, so as toset the wings at the desired angle.

Having thus described the invention, what we claim is 1. In combinationwith a motor, a shaft driven thereby mounted in a step-bearing at oneend and having fan-wings attached thereto, and means to exert endwisepressure on the shaft against said bearing, to govern its speed.

2. In combination with a fixed support, a motor, a shaft driven therebyhaving a bearing in the support and carrying fan-wings, and an adjListing-screw binding the shaft endwise to vary the speed thereof.

3. In combination, a casing, a motor, a hollow shaft having at one end astep-bearing in the casing and carrying fan-wings, a screw extendingthrough the shaft and engaging the casing at the bearing, and a washeron the screw bearing against, the other end of the shaft, whereby theshaft may be bound endwise between the bearing and the washer to governits speed.

In testimony whereof we affix our signatures in presence of twowitnesses.

CLARENCE R. BROCK. l/VILLIAM C. EARTH.

WVitnesses:

F. S. SANDERS, A. F. BERNER.

